| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Securus Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Tiong Bahru |
| Grand Copthorne Waterfront Hotel | Central | Hotel | Security Managment | CSO | Jurong East |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Punggol |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Bedok |
| SMS Investigation & Security Pte Ltd | Central | Commercial | SS | CSO | Clementi |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Pioneer |
| Reachfield Security & Safety Management Pte Ltd | Central | Gov Building | SO | SO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | Yishun |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | SO | Jurong East |
| Prosec Services Pte Ltd | South | Commercial | SSS | SSS | Tanjong Pagar |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Condominium | SS | SSS | Jurong East |
| SATS Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSO | Hougang |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Pasir Ris |
| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SS | Hougang |
| Ademco Security Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
